flipper-zero-tutorials/gpio/spi_demo/spi_v2.c

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2023-11-15 21:43:03 +00:00
/*
Improved demo reading from a w25q32 chip using SPI.
*/
#include <furi.h>
#include <furi_hal.h>
#define TAG "LearnSPI-SPI-V2"
static uint32_t timeout = 1000;
static FuriHalSpiBusHandle* spi = &furi_hal_spi_bus_handle_external;
void read_w25q32_spi_v2() {
uint8_t command_read_memory[1] = {0x03}; // Read command
uint8_t read_memory_address[3] = {0x00, 0x01, 0x00}; // Memory address is 0x000100
uint8_t data_response[6] = {0, 0, 0, 0, 0, 0}; // Read 5 bytes + NULL terminator.
furi_hal_spi_acquire(spi);
if(furi_hal_spi_bus_tx(spi, command_read_memory, 1, timeout) &&
furi_hal_spi_bus_tx(spi, read_memory_address, 3, timeout) &&
(furi_hal_spi_bus_rx(spi, data_response, 5, timeout))) {
char* data_response_str = (char*)data_response;
FURI_LOG_E(
TAG,
"MESSAGE STORED IN CHIP AT ADDRESS 0x%02X%02X%02X IS: %s",
read_memory_address[0],
read_memory_address[1],
read_memory_address[2],
data_response_str);
} else {
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FURI_LOG_E(TAG, "FAILED - furi_hal_spi_bus_tx or furi_hal_spi_bus_rx failed.");
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}
furi_hal_spi_release(spi);
}
void spi_demo_v2() {
furi_hal_spi_bus_handle_init(spi);
read_w25q32_spi_v2();
furi_hal_spi_bus_handle_deinit(spi);
}